CfA Interplanetary Shock Database - Individual Event Detail
 

Database: Ace Shock Analysis
Event ID: 20021310925
Observation time: 05/11/2002 131.39240 0925 [UT]

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Asymptotic parameters
Shock front normals
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Wave speed and Mach numbers
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Simple methods
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Individual equations
Shock speed
Theta Bn
Mach numbers


General Information (About, Top)

Year 2002
Fractional day of year 131.392396
Arrival time of shock [seconds of day] 33903.0 ± 16.0
Shock type FF
Electron data availability 0
X GSE location of spacecraft [Re] 0.037
Y GSE location of spacecraft [Re] 0.006
Z GSE location of spacecraft [Re] -0.003
Upstream plasma points selected for analysis 0011
Upstream field points selected for analysis 0044
Downstream plasma points selected for analysis 0009
Downstream field points selected for analysis 0039
Minimum chisq/dof for RH8,RH9,RH10 7.32, 8.76, 9.10
Event added to database
Sun May 1 22:15:22 2005
Event last processed
Tue May 3 14:22:51 2005
Method selected
RH08
Propagation delay to Earth [minutes]
0.008 ± 0.001

Asymptotic plasma parameters (About, Top)

Parameter
Upstream
Downstream
Vx GSE [km/s] -355.9 ± 4.4 -446.0 ± 6.5
Vy GSE [km/s] -16.0 ± 7.7 -49.2 ± 4.7
Vz GSE [km/s] -43.3 ± 4.3 -57.6 ± 4.3
Wi [km/s] 26.0 ± 1.8 41.6 ± 4.2
We [km/s] 823.1 ± 55.5 1316.5 ± 131.3
Ni [n/cc] 10.0 ± 0.7 25.1 ± 2.0
Bx GSE [nT] 6.1 ± 0.7 1.3 ± 1.3
By GSE [nT] -1.1 ± 1.0 -10.5 ± 1.1
Bz GSE [nT] -5.7 ± 0.6 -16.1 ± 0.9
Plasma Beta
0.198 ± 0.195
0.246 ± 0.243
Sound Speed [km/s]
33.60 ± 2.27
53.75 ± 5.36
Alfven Speed [km/s]
58.83 ± 2.04
84.35 ± 2.40

Best values of shock front normal for each method (About, Top)

Method Nx Ny Nz Theta [degrees] Phi [degrees]
MC -0.876 ± 0.032 -0.079 ± 0.058 0.475 ± 0.436 28.39 ± 3.78 185.12 ± 3.81
VC -0.929 ± 0.030 -0.341 ± 0.079 -0.145 ± 0.144 -8.36 ± 3.21 200.15 ± 4.84
MX1 -0.893 ± 0.033 -0.042 ± 0.058 0.447 ± 0.415 26.56 ± 4.27 182.67 ± 3.72
MX2 -0.919 ± 0.021 0.026 ± 0.073 0.394 ± 0.372 23.18 ± 3.10 178.37 ± 4.52
MX3 -0.930 ± 0.021 0.062 ± 0.088 0.362 ± 0.346 21.25 ± 3.26 176.16 ± 5.44
RH08 -0.930 ± 0.005 0.139 ± 0.014 0.341 ± 0.327 19.92 ± 0.78 171.48 ± 0.84
RH09 -0.930 ± 0.021 0.139 ± 0.059 0.341 ± 0.327 19.92 ± 3.26 171.48 ± 3.66
RH10 -0.930 ± 0.022 0.139 ± 0.061 0.341 ± 0.327 19.92 ± 3.31 171.48 ± 3.73
Average -0.917 0.006 0.319 18.848 179.612
Median -0.929 0.062 0.362 21.246 178.374
Deviation 0.021 0.163 0.195 11.456 9.810

Key shock parameters (About, Top)

Method ThetaBn Shock Speed Compression
MC 19.0 ± 8.4 416.7 ± 9.5 2.54 ± 0.24
VC 57.8 ± 8.7 505.0 ± 13.1 2.54 ± 0.24
MX1 19.6 ± 7.8 425.1 ± 9.5 2.54 ± 0.24
MX2 21.4 ± 6.7 436.6 ± 9.5 2.54 ± 0.24
MX3 22.8 ± 6.2 441.7 ± 9.5 2.54 ± 0.24
RH08 23.8 ± 5.1 437.3 ± 9.4 2.54 ± 0.24
RH09 23.8 ± 5.1 437.3 ± 9.4 2.54 ± 0.24
RH10 23.8 ± 5.1 437.3 ± 9.4 2.54 ± 0.24
Average 26.5 442.1 2.54
Median 23.8 437.3 2.54
Deviation 12.8 26.7 0.00

Upstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 124.2 ± 2.7 31.0 ± 1.9 55.6 ± 1.9 60.3 ± 1.9 4.01 ± 0.20 2.06 ± 0.08
VC 162.7 ± 6.7 16.0 ± 0.8 31.3 ± 1.1 65.9 ± 1.6 10.20 ± 0.30 2.47 ± 0.12
MX1 125.7 ± 2.6 30.9 ± 1.9 55.4 ± 1.9 60.3 ± 1.9 4.08 ± 0.20 2.09 ± 0.08
MX2 126.9 ± 2.6 30.4 ± 1.8 54.8 ± 1.9 60.6 ± 1.8 4.19 ± 0.21 2.10 ± 0.07
MX3 127.4 ± 2.7 30.0 ± 1.8 54.2 ± 1.9 60.8 ± 1.8 4.26 ± 0.21 2.10 ± 0.07
RH8 123.4 ± 2.5 29.7 ± 1.8 53.8 ± 1.9 60.9 ± 1.8 4.17 ± 0.22 2.03 ± 0.06
RH9 123.4 ± 2.5 29.7 ± 1.8 53.8 ± 1.9 60.9 ± 1.8 4.17 ± 0.22 2.03 ± 0.06
RH10 123.4 ± 2.5 29.7 ± 1.8 53.8 ± 1.9 60.9 ± 1.8 4.17 ± 0.22 2.03 ± 0.06
Average 129.6 28.4 51.6 61.3 4.9 2.1
Median 125.7 30.0 54.2 60.9 4.2 2.1
Deviation 13.5 5.1 8.2 1.9 2.1 0.1

Downstream wave speeds and mach numbers (About, Top)

Method
dV
Slow
Intermediate
Fast
Slow
Mach
Fast
Mach
MC 49.5 ± 6.3 49.2 ± 4.5 79.8 ± 2.3 87.2 ± 2.5 1.01 ± 0.09 0.57 ± 0.06
VC 65.7 ± 5.4 24.9 ± 1.9 44.9 ± 1.3 97.0 ± 3.5 2.65 ± 0.24 0.68 ± 0.05
MX1 50.3 ± 6.4 48.9 ± 4.4 79.5 ± 2.3 87.3 ± 2.5 1.03 ± 0.09 0.58 ± 0.06
MX2 50.7 ± 6.6 48.0 ± 4.3 78.5 ± 2.2 87.8 ± 2.6 1.05 ± 0.10 0.58 ± 0.06
MX3 50.9 ± 6.6 47.4 ± 4.2 77.7 ± 2.2 88.2 ± 2.6 1.07 ± 0.10 0.58 ± 0.07
RH8 49.1 ± 6.8 46.9 ± 4.1 77.2 ± 2.2 88.4 ± 2.6 1.05 ± 0.10 0.55 ± 0.07
RH9 49.1 ± 6.8 46.9 ± 4.1 77.2 ± 2.2 88.4 ± 2.6 1.05 ± 0.10 0.55 ± 0.07
RH10 49.1 ± 6.8 46.9 ± 4.1 77.2 ± 2.2 88.4 ± 2.6 1.05 ± 0.10 0.55 ± 0.07
Average 51.8 44.9 74.0 89.1 1.2 0.6
Median 50.3 47.4 77.7 88.4 1.0 0.6
Deviation 5.7 8.1 11.8 3.2 0.6 0.0

Survey interval (About, Top)
Survey of solar wind interval
Selected data (About, Top)
Key plasma parameters
Survey
Velocity
V

Magnetic Field
B


Simple Methods (About, Top)
Simple methods
Rankine Chi^2 Contour (About, Top)

Chisq


Shock Speed (About, Top)
Shock Speed

Theta Bn (About, Top)
Theta Bn

Mach Numbers (About, Top)

Upstream wave speeds
Upstream Mach numbers
Downsteam wave speeds
Downstream mach numbers
Page updated Mon Apr 13 08:55:21 2009
Michael L Stevens (mstevens@cfa.harvard.edu)

   
 

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